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Active Aircraft Pylon Noise Control System
Unmanned Aerial Systems Traffic Management
Method of Bonding Dissimilar Materials
Sonar Inspection Robot System
Applying the Dynamic Inertia Measurement Method to Full-Scale Aerospace Vehicles
Method and Apparatus for Measuring Surface Air Pressure
Fully Premixed, Low-Emission, High-Pressure, Multi-Fuel Burner
Self-Healing Wire Insulation
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Modular Battery Charge Controller

Distributed charge control and a masterless communication bus enhance this controller’s robustness for use in battery energy-storage applications. A new approach to masterless, distributed, digital-charge control for batteries requiring charge control has been developed and implemented. This approach is required in battery chemistries that need cell-level charge control for safety and is characterized by the use of one controller per cell, resulting in redundant sensors for critical components, such as voltage, temperature, and current. The charge controllers in a given battery interact in a masterless fashion for the purpose of cell balancing, charge control, and state-of-charge estimation. This makes the battery system invariably fault-tolerant.

Posted in: Briefs, Electronics & Computers

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Re-Inventing the Number



Posted in: Blog

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Reinventing the Tuktuk

In large cities across Asia, auto rickshaws (tuktuks) are one of the most important means of transportation. These tuktuks produce considerable CO2 emissions and air pollution, and their drivers are underpaid. Students participating in the Hybrid Auto Rickshaw project sought to cut CO2 emissions by 40%, while improving the economic positions of drivers.

Posted in: GDM, News, News, Energy, Energy Efficiency, Green Design & Manufacturing, Greenhouse Gases, Transportation

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Green Aircraft Contest Takes Off

Today, the NASA Innovative Partnerships Program and the Comparative Aircraft Flight Efficiency (CAFE) Foundation officially announced the Green Flight Challenge. The flight efficiency competition is for aircraft that can average at least 100 mph on a 200-mile flight, while achieving greater than 200 passenger miles per gallon.

Posted in: GDM, News, News, Energy, Energy Efficiency, Energy Storage, Solar Power, Alternative Fuels, Green Design & Manufacturing, Transportation

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Creating "Cool" Cars

Operating the air conditioning is the largest auxiliary energy drain on cars. In December 2008, DOE announced a project to study and develop thermoelectric heating and cooling systems. As partners in the project, NREL will team up with Ford to research efficient ways of cooling vehicles.

Posted in: GDM, News, News, Energy, Energy Efficiency, Thermoelectrics, Transportation

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Windshields to Reflect Sunlight, and Perhaps Produce Electricity

The California Air Resources Board will require new cars sold in California to have windows that reflect or absorb heat-producing rays from the sun. Starting in 2012, windows must prevent 45 percent of the sun's total heat-producing energy from entering the car, and the windshield must reject at least 50 percent. In 2016, this increases to 60 percent.

Posted in: Features, GDM, Products, Articles, Energy, Solar Power, Transportation

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Improvements in Organic Photovoltaics on the Horizon

Organic photovoltaics, which rely on organic molecules to capture sunlight and convert it into electricity, have come a step closer to reality thanks to discoveries by NIST researchers. The scientists have deepened their understanding of the complex organic films at the heart of the devices.

Posted in: GDM, News, News, Energy, Energy Efficiency, Renewable Energy, Solar Power

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